Cleaning and polishing compound



" UNIT-E DQSTATES-I Patented Dec. 13', 1927.

- LEO in. DE'MARsor MINNEAPOLIS, MINNESOTA;

CLEANING AND POLISHING COMPOUND.

No Drawing.

The main object of my invention is to provide a form of cleaning and polishing compound that will clean the surface of nickel, silver, German silver, brass, bronze, aluminum, copper, -etc., without scratching the most highly polished surface or without having any harmful effect on the materials.

Another object is to provide in a compound of the class described, means for softening, dissolving and loosening the film that gathers on polished surfaces from various oxidizing actions and the like.

Another object is to provide with a solvent, a means that will polish the surface when the clouded elfect has been dissolved or removed by-the solvent portion of the comound.

Another object is to provide in a com-- pound, improved formof polishing means with an improved solvent that Will not af fect the polishing means or cause it to deteriorate.

' There has been many forms of cleaning and polishing compounds devised and used and for some classes of work numerous compolish highly polished surfaces without causing either an acid action on the surface, which will more or less mar the surface as shown under microscopic examination, or will scratch the surface with fine lines that will show under microscopic examination and will destroy the usefulness of some objects, although on certain classes of Work such scratches might not be detrimental. "In certain classes of photographic work, for instance the'polishing of films or photographic postal cards where high polish is required, it is customary to use a nickel plated cylinder which is heated generally around 120 degrees and against the face of which the photographic units are pressed and carried therearound by a belt.

The action of the photographic chemicals on the nickel plated surface soon marthe surface and'it has been found impossible to repolish this surface in the past, with the result that it has been necessary to replate these cylinders at such frequent intervalsas Application filed May 11, 1925, Serial noqaas'is.

I devised my formula primarily ,for use on such cylinders, as microscopic scratches.

which might be unnoticed on a great many classes of Work, destroy the usefulness of the general I prefer to use four pounds of the' lime to one gallon of carbon tetra-chloride, as I have found this The term Vienna lime, as herein employed, is used to deslgnate a domestic product com- 7 proportion to be the best for general purposes.

prising the followingelements in the proportions noted: calcium 52.33 parts, mag- I nesia 44.6% parts, iron and aluminum oxides 1.96 parts, silica .60 parts, and insoluble acids .23parts.

Ihave found surface when appliedthereto in solution, or if applied veryscantily in powdered form, but practically any substance in which the lime may be held in suspension, will slake it more or less rapidly, so that compounds put up in water or with benzine, or any other substance except carbon tetra-chloride, will slake the lime and cause it to lose its activity and hence defeat the object for'which it is used. On the other hand, I have found that the limewill not mix with the carbon tetra-chloride and remain with it indefinitely without slaking and inasmuch as carbon tetra-chloride is probably the best solvent for removing oxidized surfaces from pols ished metal I regardless of the contributing causes to the oxidi'zation with plain moisture,

that part lime will polish the sulphur or otherwise, its solvent properties together with its property mixing with the lime without slaking it, makes it an ideal constituent of a polishing compound.

My compound is used very simply by moistening a small piece of cloth, rubbing this on the parts to be cleaned as if washing, then wiping offwhile still wet and then polishing with a flannel cloth. I

The moistened cloth wets the partsto be cleaned suflicientlyto allow the carbon tetrachlorideand lime to get into and diesoliie claim: a V and washoff the accumulated grime, oxidi- A cleaning and polishing compound conzation eta, and when the compound has'been sisting of approximately one gallon of car- 10 wiped ofl while still Wet, thereis yet a suflibon tetra-chloride and approximately ;.four

5 cient 'amoi'mt'oflime still unslaked left on pounds of Vienna lime.

the surface to give it a fine polish when rubbedwith aflannelcloth. T a 1f, r I, -.LEO M. DE MARS. 

